Liquid-fuel bus nes



Sept. 20,1927.

. J. L. DONAHOO LIQUID FUEL BURNER Filed Oct. 1. 1924 IN VE/V 7 {75555 L. DON/71900. 5r fll Patented Sept. 20, 1927.

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' Jesse L. nonnn'oo, or Minne -some. arrnnnsora;

LIQUID-FUEL Brianna.

Application filed October 1, 1924. Serial No. 741,044.

. My invention has-for itspurposeto proh-vide air-improved liquid. fuel burner which ma be used. in combination with furnaces portion; of aJ-furnace, with my 'burner applied, the wallsoffth'e furnace beingbroken away to show the burner; i Fig. 2 is a plan view of mylmproved burner; e v

Fig 3 is avertical section-taken on the line"313;.ofFig.1-2';iand r I a Fig.4 isa'vertical section taken on the Iine'HofFigQ.

Referring to the drawings, A denotes a port on of a standard furnace having a draft opening B- in the lower portion thereof. Above-the draft opening, thefurnace' proper is sealed by a partition G of noninfiammable material which is preferablysupported by the grate bar supports of the furnace, but maybe Supported by'any other suitable means. 3 I

A rectangular opening is formed in the partition C over which a base plate 5, preferably of rectangular shape, fits, said plate resting upon the partition C. and held in engaging position with the partition by means of depending flanges 6 which abut against the sides of the opening in the partition. The plate 5 is provided with a number of grooves 7 at either end and either side Y thereof.- A circular portion is cut in the center of plate 5 into -which the bowl 8 fits. The bowl 8 is positively held in engagement with plate 5 by means of depending lugs 9 formed on the bottom of the bowl, said lugs fitting into corresponding notches cut in the circular edge of plate 5. Plate 5'is formed with ellipse-like openings 10 toward each end of the plate communicating directly with the ash pit of the furnace.

The bowl 8 is formed with an upstanding conical cylindrical burner head 11, the upper side of which is cast into a series of concentric circular grooved flanges. The bowl 8 is substantially circular in form with half elliptical indentations at two opposite points on the edge thereof; The bowl is curved upwardly outward from the base of the burner head 11. A threaded fuel opening 12 is formed in the center ofthe burner head 11 through which fuel conduit 13 fits. An overflow drainagepipe l4 fits into a threaded drain opening 15 on the side wall of the bowl. I An inverted substantially U-shaped air manifold 16 is placedpver "the bowl having'a central air discharge outlet situ ated'immediately over the fuel inlet 12, the

'outlet reaching down almost to the top of the discharge end of the fuel conduit." The hollow arms of'the manifold are formed substantially ellipse shape in cross section at their lower portions and taper upward to substantially a circular form in cross section meeting together at the central discharge outlet. The 0m1ng arms form a substan-' tially-\ shaped' portion at the inner top of l said manifold, which acts as an air deflecting plate to direct air from said arms downwardly :to the discharge outlet. The lower ends of the arms fit immediately over the elliptical openings 10 in plate 5 and have communication with the ash pit of the furna'cew The arms fit within the half elliptical indentations on bowl 8 and hold the bowl 8 fromgre'moval from its seat on plate 5.

The armsthemselve's are, in-t'urn, held in positive engagement with platen by means ofupstandingflangedlugs 17 formed on the plate5." The fuelinlet'pipe 13 will be joined by suitable connections to a fuel.

supply tank and the supply of fuel will be regulated by any of a number of well known means, such as by a hand valve 18.

The operation of the burner is as follows: Asupply of liquid fuel will be allowed to run through the fuel inlet conduit 13 down over the grooved burner 11 and into the bowl 8 filling each successive groove as it runs down. A small lighted piece of paper will then be thrown into the bowl. The burning of the paper will generate sufficient heat so that the crude oil or other liquid fuel used will light. Air will be supplied to the burner through the medium of the air manifold 16 and. will be projected downwardly upon the fuel. The burner head 11, bowl 8 and manifold 16 will soon become heated red hot. The hotter the burner gets, the hotter will become the air manifold, and, consequently, the air therein. As the air gets hotter the greater will be the draft through the manifold, due to the faster movement of the air, the expansion of heated air and the tapering shape of the manifold arms. After the burner has been burning for a short time and heated sufficiently, almost all of the hydrocarbon'fuel will be generated into gas immediately. The amount of heat desired may be easily obtained by regulation of the fuel supply conduit through any well known stove forming; thefplate. 5 with grooves 7 along each. end. and side, the plate. can. e mad to. fit Various sized furnaces, etc.

f a. maller si ed p ate is desired than th u ation. iz the pla may be placed with n end o a.- sid @1 11 4 a r ight edge so that thestraight edge wi l alinc. with one of the.

stones. and t e ou r. side. ofthe groove ammered unt l i breaks if- Due to. the g ooms, the edge will remain stra gh after a Pa t h s. een broken therefrom. Although plate is illustrated as of: rec angu a p y th haped P ate may be used ha ing a series o g ooves. f rmed; the eon adjacent e ges parallelto or o centric with it dges Th c rc a type f. plate is particuzydepted .ie use with round furnaces- By eXtQD-ding the inlet conduit 13 above he u ner hea 1, and to a. point alm s it in. t e. i a ifcld: 16 and; direct y be! w it, t fu l in et is preven ed: trom benn logged with c rbon, d r or greas nd a hear-y flew fue is there y seoured at l mest is. found that the hes oi any the chimney, leaving the bowl clean.

gape]: that he used starting. the M1161. re q i k y br en up. and c rri d up At about zero degree. F. weather it is found that.

after the burner has become fully heated, all the fuelsupplied will become generated into a. combustible gas shortly before it flows down onto the. bowl 8.

In actual practice, the burner has been found to heat twenty-four. hours in every 1 day with'great efliciency inallweather. The parts. are few and simply constructed and may be easily made. The burner is inexpensive to operate and practically self cleaning.

It will of coursegbe understood, that various changes nay be made in the'form, de-

tails, arrangement and proportions. (if the. various parts. without departing. from the scope of-applicants'invention which,'generv stated, consists-in the structure Shawn all an claim.

.YVhat is claimed is:

A liquid fuel burner comprising a, base plate, a bowl positively restingcn said plate, said bowl having a central burner head formed integral therewith, said bowl being substantially. circular in shape-having oppo- 0n. the edge themofi, and an air supply mam.- fold: having a central discharge" opening above. said hurnerhead, and upwardly ta poring hollow arms. fittin -over openings. in. sa d plate and into the sexhrelhptmal indencations n aidhowl, said arms bein posi tively held n engagement with said p ate.

described and set forth in the appended .sitely. disposed semi-elliptical indentations In testimony whereof I afiixmy. signature;

JESSE: nomHoo. 

